Improvement in steam-hammers



` UNITED Srnflrns- ATENT FFICE.

EDGAR L. KINSLEY,'OF CAMBRIDGE, MASSACHUSETTS.

IMPROVEMENT IN iSTEAlVl-HAMMERS.

To all whom it 'may concern:

Beit known that I, EDGAR L. KINsLEY, of: Cambridge, in the county ofMiddlesex and State of Massachusetts, have invented a new and usefulImprovement in Steam-Hammers;` and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which andwill enable others skilled in the art to make use the same, referencebeinghad to the accom-` panyin g drawings, forming part of thisspecification, in whichy Figure lis a plan or top view Fig. 2, a sideview, showing portion broken away 5 Fig. 3, a detail view. l Similar`letters of reference indicate like parts.

The present invention consists, first, in at-` taching to the rear endof the hammer-belve, by means of any suitable joint, one end of a leverturning upon a fulcrum, and connected at its" opposite end to thepiston-rod of the engine, so that the upward movementof the pistonwithin its cylinder shall thereby raise the outer or2 hammer end of thehelve, which then not only -falls from its own weight, but also, aidedby the downward movement of the piston, strikingV and hammering withgreat force the iron or other metal placednpon the anvil; second,

'attaching the lever to the hammer-helve by means of a joint that willpermit of the helve being adjusted with regard to the same, so that itshammer can be set in the proper position to hammer the metal to a bevelor any other desired shape; third,'connecting the lever or hammer-belve,or their respective shafts, with the valve or valves of thepiston-cylinder by means of an arrangement of devices susceptible ofadjustment with regard to each other at pleasure, whereby a greater orlesser movement is given to the valves of the piston-cylinder,consequently producing a proportionate increase or decrease in theupward movement of the piston within its cylinder, and thus regulatingthe height to which the hammer is lifted before falling, as may bedeemed desirable or necessary.

a a represent a bed-plate, made of any suitable material, of arectangular shape, on the upper surface of which are fastened, in thedirection of its length and parallel to each other, two uprightstandard-frames, c c.

In the front portion, d d, of the standards c c the helve ffis hung byits trunnions g g, turning in suitable bearings.

To outer end of helve f f a hammer, h h, is securely fastened, which,when the helve is in a horizontal position, rests upon-the anvilbl0ck klo, fastened to the bed-plate a a. On the top of the rear orinner end ofthe helve one end of a lever, ZZ, rests, but is so attached thereto asto ing around and overit, fastened at each end, by screws or otherwise,to the helve f j".

The lever l is fastened to a horizontal shaft, n, having bearings instandards c c, and at its end o to the piston-rod p of thesteam-cylinder q.

r is a rotary steam-valve, made of lany of the ordinary constructions,and which is to be arranged within the piston-cylinder in a similarmanner to all rotary valves of steam-engines, with passages extendingfrom it to each end of the cylinder, so that by turning the valve in theproper directions to throw it into connection with either one or theother of the steam-passages to the piston-cylinder, communication willthus be established between the stean1-chest and such end of thecylinder, the opposite end then being opened to the exhaust, therebyproducing the upward and downward play of the piston within thecylinder, and consequently, through the beam or lever l, to which theupper end of its rod is hung, alternately raising and lowering thehammer end of the helve, as is obvious, the construction and arrangementofthe piston-cylinder and its steam-valve with regard to each otherforming no part of the present invention, and therewfbre needing no moreparticular explanation than that above given in the specification.

To operate the steam-valve r so as to thus alternately throw thesteam-chest into communication with the upper and lower ends of thepiston-cylinder, I connect it through a cam or circular slotted arm, s,fastened at one end to the spindle of the valve, and a.connecting rod,c, hung at one end to the lever or beam l, and at the other in the slott of the arm s, so as to freely play therein, whereby, as is obvious,the swinging of the beam Z, caused by the upward and downward movementof the steam-piston, to which it is connected, as eX- plained, willproduce the necessary oscillating movement to the valve in its seat toalternately throw the steam-chest into communication with either theupper or lower ends of the pistoncylinder, as the case may be, the pointof the piston-stroke at which the valve is operated to change itsdirection of motion being, of course,

freely move thereon, a band or stirrup,m, passregulated by the peculiarshape which may be given to the slot of the arm s.

Steam being admitted to the piston-cylinder through the rotary valve rfr, before referred to, the piston is lifted, and consequently, throughthe lever b, the outer or hammer end of the helve is raised until thepiston has traveled its full length in the cylinder, when steam thenoperating upon the top of the piston forces it down, and at the sametime the hammer falls, not only from its own weight, but aided in agreat measure bythe pressure of the steam within the cylinder with greatforce upon the anvil or bar of metal placed thereon t0 be hammered.

By connecting the hammer-belve at its rear end to the piston-rod of thecylinder through a lever or beam, as described, it is obvious that ifthe helve is hung as explained and embraced in the schedule annexed toLetters Patent granted to Lyman Kinsley on the 10th of February, 1863,for improvements in steamhammers, the helve can be canted so as tohammer beveled edges, Ste., without disconnecting it from thesteam-power, it being only necessary that the joint of the lever or beamwith the helve should be of such a form or construction as to admit ofit-as, for instance, the metallic band or strap m shown would answer, ora universal joint.

In the hammering of metals by the use of steam hammers it is necessarythat blows should be given with varying degrees of force or strength,which are, as is evident, regulated according as the hammer falls from agreater or lesser height, and to accomplish this result I have arrangedthe devices for operating the steam-valve as described, whereby a longand slow or a short and quick movement is given to the valve, thusmoving the piston either more or less in an upward direction, andthrough the lever proportionately raising the hammer from theanvil-block.

The lengthening or shortening of the play of the steam-valve abovereferred to is caused by simply changing the position of the stud u ofthe connecting-rod c in the cam-groove tthat is, setting it, by means ofthe lever-handle z, connected through a connecting-rod w with the saidstud u, far from or near to the center of rotation of the valve,correspondingly increasing or decreasing the length of time to which thevalve remains open through the movement of the connecting-rod c of leveror beam l, whereby the hammer is necessarily lifted to a lesser orgreater height, as the case may be, and in direct proportion thereto,producing a light or heavy blow upon the metal to be hammered, as isobvious without further explanation.

In lieu of fastening the rod to the lever l,

as above described, it is evident that it can be attached as well to itsshaft or to any part or device moving in unison therewith.

The cam-groove is so formed at b as to enable the opening of the valveto be regulated to the varying distances of the hammer when at rest fromthe anvil, caused by the thickness ofthe metal bar placed thereon to behammered.

In the above I have particularly described the arrangement of the camwayas applied to a rotary steam-valve; but it is evident it can be as wellapplied to a sliding valve and without any material alteration. (SeeFig. 3, in which c is the shaft of the lever Z,- d, a projecting armattached thereto and having substantially the same form of groove asdescribed for the cam t, in which is a stud, f', of a connecting-rod,g', secured at one end to a swinging plate, h', with a proper shapedgroove, 7c', for the raising and lowering of the rod l of the valve m assaid groove moves over and upon the stud n of valve-rod Z', caused bythe reciprocating rotary movement of the cam df.)

rIhe stud of rod g is adjustable within its i groove, the same asdescribed for rod c, and operates in the same manner to lengthen andshorten the movementof valve m and to open the valve, according to thevarying heights of the hammer above the surface of the anvil, as beforespecified.

It is evident that the cam t can be attached to the lever-shaft in lieuof the rotary valve and have the same operation.

Having thus described myinvention, I claim as new and desire to secureby Letters Patent- 1. Raising the hammer by means of a lever operatingupon the rear end of the hammerhelve, and connected with the piston ofthe' steam-cylinder, arranged and operating substantially in the mannerand for the purpose described.

2. The stirrup m,.operating in combination with the helve f, lever l,and piston-rod p, and operating in the manner and for the purpose hereinspecied.

3. The arrangement of the cam-groove d, arm s, as applied to the valveof a steam-engine, and rod v, and connecting said arm with theliftinglever or beam l, or any part moving in unison therewith, substantiallyas herein described, for the purpose specified.

EDGAR L. KINSLEY.

Witnesses ALBERT W. BROWN, M. M. LIVINGsToN.

